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<title>Crispy Plotter Documentation: Instruction</title>
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<h1 class="unit">Unit Instruction</h1>
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<td><a class="section"  href="#%40Description">Description</a></td><td>uses</td><td><a class="section"  href="#%40Classes">Classes, Interfaces, Objects and Records</a></td><td>Functions and Procedures</td><td>Types</td><td>Constants</td><td>Variables</td></tr></table>
<a name="%40Description"></a><h2 class="description">Description</h2>
<p>
Implements basic elements of mathematical expressions, called instructions.</p>
<a name="%40Uses"></a><h2 class="overview">Overview</h2>
<a name="%40Classes"></a><h3 class="cio">Classes, Interfaces, Objects and Records</h3>
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<th class="itemname">Name</th>
<th class="itemdesc">Description</th>
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<td class="itemname">Class&nbsp;<a class="bold"  href="Instruction.TInstruction.html"><code>TInstruction</code></a></td>
<td class="itemdesc">The abstract class TInstruction represents an abstract part of an expression.</td>
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<td class="itemname">Class&nbsp;<a class="bold"  href="Instruction.TConstant.html"><code>TConstant</code></a></td>
<td class="itemdesc">This class represents a constant number (e.g.</td>
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<td class="itemname">Class&nbsp;<a class="bold"  href="Instruction.TFuncRef.html"><code>TFuncRef</code></a></td>
<td class="itemdesc">This class represents a call to a predefined function as operand</td>
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<td class="itemname">Class&nbsp;<a class="bold"  href="Instruction.TVarRef.html"><code>TVarRef</code></a></td>
<td class="itemdesc">This class represents a variable (e.g.</td>
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<td class="itemname">Class&nbsp;<a class="bold"  href="Instruction.TBraceRef.html"><code>TBraceRef</code></a></td>
<td class="itemdesc">This class represents a braced expression as operand</td>
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<td class="itemname">Class&nbsp;<a class="bold"  href="Instruction.TInvisBraceRef.html"><code>TInvisBraceRef</code></a></td>
<td class="itemdesc">This class is almost identical to <a class="normal"  href="Instruction.TBraceRef.html">TBraceRef</a>, but it is only used by <a class="normal"  href="InstructionList.TInstructionList.html#OpSort">InstructionList.TInstructionList.OpSort</a> to control the operator precedence.</td>
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